Finding the Fourth Proportional to 439,731.20, 659,596.80 and 253,107.20
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Solution
The fourth proportional to 439,731.20, 659,596.80 and 253,107.20 is: 379,660.80
Step by Step Solution
- Step 1: Write the proportion equation
439,731.20 : 659,596.80 = 253,107.20 : x - Step 2: Convert to fraction form
439,731.20/659,596.80 = 253,107.20/x - Step 3: Cross multiply
439,731.20x = 659,596.80 × 253,107.20 - Step 4: Simplify right side
439,731.20x = 166,948,699,176.96 - Step 5: Solve for x
x = 166,948,699,176.96/439,731.20 - Step 6: Final answer
x = 379,660.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.